Will not start after replacing fuel pump and code 42

1992 JEEP GRAND CHEROKEE LAREDO
223,000 MILES • 4.0L • V6 • 4WD • MANUAL
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ERICLEE
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  • 4 POSTS
Replaced the fuel pump but now fuel gauge won't move at all. it won't start even if I put fuel straight in the carburetor. It show code 42 which is auto shut down.. If the fuel gauge isn't coming on but that keep the engine from starting.
Jan 4, 2020 at 9:55 AM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
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  • ASE Certified Mechanic
Good afternoon,

The most common cause for this is the ECM itself as it controls the ASD.

I attached a test chart and diagram for you to view.

Roy
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Jan 4, 2020 at 10:25 AM
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ERICLEE
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Okay, now the check engine light and the shift indicator light stay lit up. I can no longer check for fault codes is this another sign of a bad ECM. Thank you for your time and advice it's greatly appreciated.
Jan 6, 2020 at 6:53 PM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
Yes, did you follow the flow chart?
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Jan 6, 2020 at 7:14 PM
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